This hair iron creates voluminous curls with its three wave barrels. It's convenient to carry and has a foldable design. The barrel size is 25mm. I've used it about 5 times, but I'm selling it because I cut my hair short. How about it if you want to try the popular wave iron? - Color: Black - Power cord length: Standard length - Number of barrels: 3 - Barrel shape: Wave Thank you for looking.